Electric storage battery.



nrrnzr ra ion.

ELECTRIC STORAGE BATTERY.

No Drawing.

fl '0 all whom it may concern.

Be it known that of the UnitedStates, residing atthe city of followingis a graphite or other material with Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Electric Storage Batteries, of which thespecification.

Negative pole plates of the Plant as Well as of the Faure or Brushtype-are improved as. to capacity and otherwise when they have 1incorporated throughout their active material or material to becomeactive inert mate rial in an extremely fine state of sub-division.

'It is the provide for introducing such finely divided inert materialthroughout the mass of become active of the negative pole platesincluding those of the types mentioned. V

- ,My invention is based upon the fact-that dcflocculated graphite madeby mixing up graphitewith Water containingv tannin constitutes asubstance which pores, openings or'interstices the eifectio f the tanninthe finely divided graphite is deposited. Lamp black, clay and othernon-crystalline sub-.

stances may. sameway.

To practice the invention, defioccul'ated graphite or other material offerred to is made, by mixing up finely divided graphite or othermaterial with water containing tannin or the like with or with out asmall quantity of, alkali as ammonia, and this deflocculated graphite orother bedeflocculated and act in the material is permitted to penetratethe pores,

active material openings or interstices oflthe or material to becomeactive of a negative pole plate of any of the types mentioned.

graphite main so that the deflocculated gr phite or other material maypenetrate their active material Or-material to become active which itwill do since it will pass through filters.

the deflocculated t-heacti've e active of Thereafter the Another way. istomix material or materialto beco plates of the Brush type.

Specification of Letters Patent. Application filed December 13, 1907.

principal object of the present invention to active material ormaterial'to,

terial throughout the kind rene way of doing this is to dip the platesinto the solution of'defiocculated or other material and to permit themto re-.

vided graphite into the pmaterial to become activeof negative polePatented-July as, 1911. Serial No. 406,252.

p effect of the tanninor like unaterial used I, BRUCE Fonn, a citizendrying. By this are finished or during their manufacture or even torejuvenate them afterthey have been subjected to use:

What I claim-is: p 1. The method of incorporating inert material intothe active material or material to become active of negative pole plateswhich consists n treating deflocculatable inert materm] with a'deflocculizing substance, permitting the defiocculated inert materialto,

penetrate the pores, interstices or openings of the active material ormaterial to become active, and then neutralizing thedefiocculizingsubstance to precipitate the inert ma the mass of the active material ormaterial to becomev active, substantially as described.

he process of incorporating finely divided inert material with theactive mater al or material to become active of the negative-pole platesof electric storage batteries 'Which consists in effecting the additionof the inert material by precipitation from a deflocoulated condition.

3. The method of incorporating finely divided inert material with theactive/matefnal or material tobecome active of'negative pole plateswhich consists in preparing defio'cculated' inert material finelydivided inert material with Water containing tannin,',applying the-deflocculated inert material to the plates and permitting it topenetrate the pores. openings or interstices ofthe active materialor-rna. terial to become active, and neutralizing the -tannin to destroythe effect thereof, substan'- tially as described. I

4. The method of incorporating finely diplates which consists inimpregnating the active material or material to become activewithd'efiocculated graphite. and precipitatby mixing the active material orthe. mass of the active material or material to become active,substantially as described.

5. The method of incorporating finely divided inseluble inert materialinto the active material or material to becoineactive of the negativepole plates-0f electric storage batterms which consists 1n immersing theactive material in a liquid holding the inert material in suspension andprecipitating said 'tfopies of this patent may be obtained f BRUCE FORD.

Witnesses GEO. M. HOWARD, Lnonanp H. VVQRM.

or five cents each, by addressing the Commissioner of Patents,

Washington, I). C.

